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Anarel [89]
4 years ago
11

Hillary needs to know if the triangle shown is a right triangle. Which equation should she use to help?

Mathematics
1 answer:
Sonja [21]4 years ago
7 0

Answer:

a2+b2=c2

Step-by-step explanation:

A right triangle is a triangle in which one of the angles is a 90∘ angle. A triangle can be determined to be a right triangle if the side lengths are known. If the lengths satisfy the Pythagorean Theorem (a2+b2=c2) then it is a right triangle.

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Suppose about 400,000 people live in an area of 160 square miles. What is the best estimate for the population density?
blondinia [14]

Answer:

2500 people PER square mile

Step-by-step explanation:

THe population density is the population per unit area.

Here,

Given:

Population = 400,000

Total Area = 160 sq. miles

To get population density, we would need the population PER UNIT AREA, per miles.

We can get that by dividing the total population by total area:

400,000/160 = <u>2500 people PER square mile</u>

This is the population density.

5 0
4 years ago
2/5- -3/4 what would be the answer?
Ipatiy [6.2K]

For this case we must simplify the following expression:

\frac {2} {5} - (- \frac {3} {4})

By definition of the law of multiplication signs we have to:

- * - = +

So, rewriting the expression we have:

\frac {2} {5} + \frac {3} {4} =\\\frac {4 * 2 + 5 * 3} {5 * 4} =\\\frac {8 + 15} {20} =\\\frac {23} {20} = 1.15

Thus, the answer in decimal form is 1.15.

Answer:

\frac {23} {20} = 1.15

5 0
4 years ago
(q^2)^y=q^6 find the value of y
jonny [76]

Answer:

y = 3

Step-by-step explanation:

(  {q}^{2} )^{y}  =  {q}^{6}  \\  {q}^{2y}   =  {q}^{6} \\ 2y = 6 \\ y =  \frac{6}{2}  \\ \huge \red{ \boxed{  y = 3}}

3 0
4 years ago
Jack and Jim sign up with an online music store. Jack chooses 15 downloads for $19.75, and Jim chooses 40 downloads for $43.50.
lina2011 [118]
The answer would be A. <span>The registration fee is $5.50, and the cost per download is $0.95.</span>

Solution
Let x = registration fee
y = cost/downloads

Jack
15y + x = 19.75 ; x = 19.75 - 15y
Jim
40y + x = 43.50

Thus,
40y + x = 43.50
40y + <span>19.75 - 15y = 43.50
</span>25y = 23.75
y= 0.95

for x,
<span>x = 19.75 - 15y</span>
x = 19.75 - 15( 0.95)
x= 19.75 -14.25
x = 5.5
3 0
4 years ago
I only have 20 min left it has a timer on me
Fofino [41]

Answer:

it is 3,540ml that is less than 10 L

Step-by-step explanation:


5 0
4 years ago
Read 2 more answers
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